Shoe machine



.Oct. 27, 1936.

A. R. MORRILL SHOE MACHINE Original Filed March 8, 1953 Figi WYL 'in ess Patented Oct. 27, 1936 SHOE MACHINE Alfred R. Morrill, Beverly, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. J., a, corporation of New Jersey Original application March 8, 1933, Serial No. 660,018. Divided and this application May 4, 1935, Serial No. 19,806

9 Claims. (Cl. Hilf-258) The present invention relates to the construction and arrangement of means for supporting and controlling the operation of shoe and other similar machines having a column on which the operating parts of the machine are mounted and means for driving the operating parts extending through the column.

The object of the invention is to provide a novel and improved adjustable mounting for shoe machines and the like, arranged to permit the use of an eiiicient and compact driving arrangement for the machine.

With this and other objects in view, as will hereinafter appear, the several features of the invention consist in the devices, combinations and arrangements of parts hereinafter described and claimed which, together with the advantages to be obtained, will be readily understood by those skilled in the art from the following description taken in connection with the accompanying drawing illustrating a machine embodying the features of the invention.

Referring to the drawing, Figure 1 is a. view in side elevation, with the base or column partly in section, of a machine embodying the present lnvention; and Figure 2 is a vertical sectional view of the upper portion of the machine column.

The machine illustrated in the drawing is an inseam shoe sewing machine having a curved hook needle 2, a channel guide 4, a work rest 6, a welt guide 8 and other stitch forming and work manipulating devices contained within a head casing 9, these parts being constructed and arranged to operate as in the machine disclosed in applicants prior application Serial No. 660,018, filed March 8, 1933, of which application the present application is a division. A

The driving mechanism of the machine comprises a main friction driving clutch, (not shown), the driving part of which is carried upon the upper end of a main vertical drive shaft I0 driven from a main driving motor I2 in the base of the machine. The clutch is controlled by a foot treadle I4, by means of which the clutch can be actuated to cause the machine to be rotated at the desired speed. l

The column upon which the head of the machine is supported is adjustable to suit the height of the operator and to this end is composed of a main base portion I 6 and a tubular head supporting portion I8 fitting tightly into the upper end of the base. The head is bolted to the upper end of the support I8 and secured in its bottom wall is a flanged bushing 20 containing a roller thrust bearing 22 which, in the illustrated embodiment of the invention, rests upon the upper end` of a vertically arranged tubular shaft 24 concentrically surrounding the drive shaft I0. This shaft, just below its upper end, is journalled in an inwardly projecting web 26 of support I8 and 5 below the web is provided with a threaded portion engaging a screw thread formed in the upper end of a tubular bracket 28, the lower end of which is fitted to a perforation in a web 30 of the base i6 and rigidly secured thereto by a clamping nut 32. A gear 34 is formed on the upper end of the shaft 24 arranged to mesh with a worm gear 36 on a hand operated cross shaft 38 having a squared end .extending outside of the support I8 so that the shaft may be readily rol5 tated to raise or lower the head of the machine.

The treadle for controlling the main driving clutch is mounted on a lever 40 pivoted at its rear end on a gear casing 42 within and rigid with the base I6 and acted upon by an elevating spring 44. A link 46-connects the treadle lever to the outer end of a short lever 48, the inner end of which is pivotally connected to and supports a vertically arranged control rod 50. This rod extends upwardly inside the base I6 and tubular support I8 and through the bottom wall of the head where it is operatively connected to control the main clutch.

'To enable the effective length of the rod 50 to be adjusted to correspond with the height of the column, the connection between the lower end of the rod with the lever 48 comprises a block 52 pivotally mounted on the lever and having a screw threaded engagement with the rod. At its upper end the rod is provided with a splined portion having a sliding engagement with a gear 54 which is held from axial movement between the tubular support I8 and the bottom wall of the head and meshes with the gear 34 on the column adjusting shaft 24. The effective length of the rod 50 is thus adjusted automatically as the head of the machine is raised or lowered.

The vertical shaft I0 from which the machine is operated' is rotated continuously from the motor I2, mounted in the lower portion of the base I6. The motor is arranged with its armature or rotor axis horizontal, and in order to transmit motion to the vertical shaft i0, the armature is coupled to a short horizontal shaft 56 mounted in the gear casing 42 and having a bevel gear 58 secured thereto, meshing with a bevel gear lili secured to the lower end of a vertical shaft section 62, having a bearing in the upper Wall of the gear casing 42. The vertical shaft I0 has a bearing in the bushing 20 in the bottom Wall of the 55 head and extends downwardly through the hollow column adjusting shaft 24', and at its lower end has a telescoping connection with the shaft section $2. Provision is thus made for the automatic adjustment of driving connections between the motor and the head of the machine whenever an adjustment is made in the height of the head.

The nature and scope of the invention having been indicated, and a'machine embodying the several features of the invention having been specifically described, what is claimed is:-

1. A shoe machine having, in combination, a head, devices for operating on a shoe mounted in the head, a column adjustable to the height of the operator comprising a base and a support for the head mounted for sliding movement in a vertical direction on the base, a driving shaft rotatable in the base, and driving connections from the driving shaft to the operating devices in the head comprising a vertical telescoping shaft having a section mounted in the base and a section mounted to move axially with the head.

2. A shoe machine having, in combination, a head, devices for operating on a shoe mounted in the head, a column adjustable to theheight of the operator comprising a base and a support for the head mounted for sliding movement in a vertical direction on the base, a motor mounted in the base, and driving connections from the motor to the devices in the head comprising a vertical shaft having a section mounted in the base and a section mounted to move 'axially with the head and telescopically connected to the other section.

3. A shoe machine having, in combination, a head, devices for operating on a shoe'mounted in the head, a column adjustable to the height of the operator comprising a base and a support for the head mounted for sliding movement in a vertical direction on the base, a vertically arranged hollow screw threaded adjusting shaft on which' the weight of the support and head is carried, a motor mounted in the base, and driving connections from the motor to the devices in the head comprising a vertical shaft extending through the lhollow adjusting shaft and having a section mounted in the base and a section mounted to move axially with the head and telescopically connected to the other section.

4. A shoe machine having, in combination, a head, devices for operating on a shoe mounted in the head, a column adjustable to the height of the operator comprising a base and a support for the head mounted for sliding movement in a vertical direction on the base, a vertically arranged hollow threaded adjusting shaft on which the weight of the support and head is carried, a tubular bracket secured to the base and provided with an internally threaded screw portion engaging the hollow adjusting shaft, a motor mounted in the base, and driving connections from the motor to the devices in the head comprising a vertical shaft extending through the tubular bracket and hollow adjusting shaft and having a section mounted in the base and a section mounted to move axially with the head and telescopically connected to the other section.

5. A shoe machine having, in combination, a head, devices for operating on a shoe mounted in the head, a column adjustable to the height oi the operator comprising a base and asupport for the head mounted for sliding movement in a vertical direction on the base, a driving shaft rotatable in the base, a treadle in the base, a control rod connected to be operated by the treadle, means for raising and lowering the support on the base and simultaneously for changing the effective length of the treadle rod, and driving connections between the driving shaft and the `-operating devices in the head comprising a vertical telescoping shaft having a section rotatably mounted in the support and another section rotatably' mounted in the base.

6. A shoe machine having, in combination, a head, devices for operating on a shoe mounted in the head, a column adjustable to the height of' the operator comprising a base and a support for the head mounted for sliding movement in a vertical direction on the base, a driving shaft rotatable in the base, a treadle in the base, a threaded control rod, a threaded part connected4 to be operated by the treadle, means for raising and lowering the support on the base and simultaneously for rotating the treadle rod relatively to the threaded part to increase or decrease the effective length of the treadle rod, and driving connections between the driving shaft and the operating devices in the head comprising a vertical telescoping shaft.

'1. A shoe machine having, in combination, a head, devices 4for operating on a shoe mounted in the head, a column adjustable to the height of the operator comprising a base and a support for the head mounted for sliding movement in a vertical direction on the base, a driving shaft rotatable in the base, a threaded shaft between the base and support for adjusting the height of the column, and driving connections mounted concentrically with the threaded adjusting shaft cornprising a vertical telescoping shaft having a section mounted in the support and another section rotatably mounted in the base.

8. A shoe machine having, in combination, a head, devices for operating on a shoe mounted in the head, a column adjustable to the height of the operator comprising a base and a support for the head mounted for sliding movement in a vertical direction on the base, a driving shaft rotatable in the base, a hollow threaded shaft between the base and support for adjusting the height of the column, and driving connections within the hollow adjusting shaft comprising a vertical telescoping shaft having a section mounted in the support and another section rotatably mounted in the base.

9. A shoe machine having, in combination, a

l head, devices for operating on a shoe mounted in the head, a column adjustable to the height of the operator comprising a base with a hollow base portion and a tubular support for the head slid-l ably mountedA for vertical movement in the base, a driving shaft rotatable in the base, a hollow threaded shaft rotatably mounted in the support for adjusting the height of the column, a tubular bracket on the base extending into the head and having a threaded portion surrounding the threaded shaft to support the shaft on the base, and driving connections comprising a vertical telescoping shaft within the hollow threaded shaft and the tubular bracket having a section rotatably mounted in the support and another section rotatably mounted in the base.

ALFRED R. MORRILL. 

